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我想通过蓝牙使用Python-bluez将数据从Android客户端（Nexus 4）发送到Python服务器（Linux机器）。每当客户端向OutputStream写入一些字节时，就会抛出一个IO异常“Broken Pipe”。服务器也似乎它不接受任何连接虽经Android客户端没有抛出任何异常 “socket_name.connect（）”从Android（客户端）通过蓝牙发送数据到Python（服务器）通过蓝牙
Android客户端：
public class MainActivity extends Activity {
private BluetoothSocket ClientSocket;
private BluetoothDevice Client;
private ConnectedThread Writer;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
public BluetoothAdapter mblue;
public void connect(View sender)
{
mblue = BluetoothAdapter.getDefaultAdapter();
int REQUEST_ENABLE_BT = 1;
final TextView er = (TextView)findViewById(R.id.Error);
if(mblue == null)
er.setText("No Bluetooth!");
else if (mblue.isEnabled()) {
er.setText(mblue.getAddress() + " " + mblue.getName());
}
else{
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
}
}
public void disov(View sender)
{
final TextView er = (TextView)findViewById(R.id.Error);
boolean tr = mblue.startDiscovery();
if(tr == true)
{
er.setText("Disovering !!");
}
IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
registerReceiver(mReceiver, filter);
}
public void start(View sender)
{
final TextView er = (TextView)findViewById(R.id.Error);
final TextView lol = (TextView)findViewById(R.id.editText1);
Writer.write(lol.getText().toString().getBytes());
lol.setText("");
}
public void send(View sender)
{
ConnectThread con = new ConnectThread(Client);
con.start();
}
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent)
{
String action = intent.getAction();
// When discovery finds a device
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
// Get the BluetoothDevice object from the Intent
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
// Add the name and address to an array adapter to show in a ListView
//mArrayAdapter.add(device.getName() + "\n" + device.getAddress());
final TextView er = (TextView)findViewById(R.id.Error);
if(device.getAddress().equals("9C:2A:70:49:61:B0") == true)
{
Client = device;
er.setText("Connected with the target device!");
}
}
}
};
private class ConnectThread extends Thread {
private final BluetoothSocket mmSocket;
private final BluetoothDevice mmDevice;
public ConnectThread(BluetoothDevice device) {
// Use a temporary object that is later assigned to mmSocket,
// because mmSocket is final
BluetoothSocket tmp = null;
mmDevice = device;
UUID myuuid = UUID.fromString("94f39d29-7d6d-437d-973b-fba39e49d4ee");
final TextView er = (TextView)findViewById(R.id.Error);
// Get a BluetoothSocket to connect with the given BluetoothDevice
try {
// MY_UUID is the app's UUID string, also used by the server code
tmp = device.createRfcommSocketToServiceRecord(myuuid);
} catch (IOException e) {}
ClientSocket = mmSocket = tmp;
Writer = new ConnectedThread(ClientSocket);
}
public void run() {
// Cancel discovery because it will slow down the connection
mblue.cancelDiscovery();
final TextView er = (TextView)findViewById(R.id.Error);
try {
// Connect the device through the socket. This will block
// until it succeeds or throws an exception
mmSocket.connect();
} catch (IOException connectException) {
// Unable to connect; close the socket and get out
try {
mmSocket.close();
} catch (IOException closeException) {}
return;
}
// Do work to manage the connection (in a separate thread)
//manageConnectedSocket(mmSocket);
}
/** Will cancel an in-progress connection, and close the socket */
public void cancel() {
try {
mmSocket.close();
} catch (IOException e) {}
}
}
public class ConnectedThread extends Thread {
private final BluetoothSocket mmSocket;
private final InputStream mmInStream;
private final OutputStream mmOutStream;
public ConnectedThread(BluetoothSocket socket) {
mmSocket = socket;
InputStream tmpIn = null;
OutputStream tmpOut = null;
final TextView er = (TextView)findViewById(R.id.Error);
// Get the input and output streams, using temp objects because
// member streams are final
try {
tmpIn = socket.getInputStream();
tmpOut = socket.getOutputStream();
} catch (IOException e) {}
mmInStream = tmpIn;
mmOutStream = tmpOut;
er.setText(er.getText() + "\n" + socket.toString());
}
public void run() {
byte[] buffer = new byte[1024]; // buffer store for the stream
int bytes; // bytes returned from read()
// Keep listening to the InputStream until an exception occurs
while (true) {
try {
// Read from the InputStream
bytes = mmInStream.read(buffer);
// Send the obtained bytes to the UI activity
// mHandler.obtainMessage(MESSAGE_READ, bytes, -1, buffer)
// .sendToTarget();
} catch (IOException e) {
break;
}
}
}
/* Call this from the main activity to send data to the remote device */
public void write(byte[] bytes) {
final TextView er = (TextView)findViewById(R.id.Error);
try {
mmOutStream.write(bytes);
//mmOutStream.
} catch (IOException e)
{
er.setText(e.toString());
}
}
/* Call this from the main activity to shutdown the connection */
public void cancel() {
try {
mmSocket.close();
} catch (IOException e) { }
}
}
}
Python的服务器：
from bluetooth import *
server_sock=BluetoothSocket(RFCOMM)
server_sock.bind(("",PORT_ANY))
server_sock.listen(1)
port = server_sock.getsockname()[1]
uuid = "94f39d29-7d6d-437d-973b-fba39e49d4ee"
advertise_service(server_sock, "SampleServer",
service_id = uuid,
service_classes = [ uuid, SERIAL_PORT_CLASS ],
profiles = [ SERIAL_PORT_PROFILE ],
# protocols = [ OBEX_UUID ]
)
print("Waiting for connection on RFCOMM channel %d" % port)
client_sock, client_info = server_sock.accept()
print("Accepted connection from ", client_info)
try:
while True:
data = client_sock.recv(1024)
if len(data) == 0: break
print("received [%s]" % data)
except IOError:
pass
print("disconnected")
client_sock.close()
server_sock.close()
print("all done")
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